Question 1

A heterocyst is a cell specialized for

Accepted Answer

A) photosynthesis. 
B) nitrogen fixation. 
C) sexual reproduction. 
D) cellular respiration. 
E) external digestion. 
A) photosynthesis. 
B) nitrogen fixation. 
C) sexual reproduction. 
D) cellular respiration. 
E) external digestion. B

Question 2

From which of the following did land plants evolve?

Accepted Answer

A) Rhodophytes 
B) Dinophytes 
C) Chlorophytes 
D) Phaeophytes 
E) Euglenophytes 
A) Rhodophytes 
B) Dinophytes 
C) Chlorophytes 
D) Phaeophytes 
E) Euglenophytes C

Question 3

Ciguatera poisoning is due to activities of:

Accepted Answer

A) green algae 
B) diatoms 
C) dinoflagellates 
D) brown algae 
E) Euglena 
A) green algae 
B) diatoms 
C) dinoflagellates 
D) brown algae 
E) Euglena C

Question 4

Which of the following is not a contributing factor to the success of Caulerpa taxifolia?

Accepted Answer

A) tolerance of broad range of temperatures 
B) an elaborate sexual reproduction strategy 
C) rapid growth rate 
D) its inedibility 
E) all of these are contributing factors to the success of Caulerpa taxifolia 
A) tolerance of broad range of temperatures 
B) an elaborate sexual reproduction strategy 
C) rapid growth rate 
D) its inedibility 
E) all of these are contributing factors to the success of Caulerpa taxifolia

Question 5

Algal blooms are triggered by:

Accepted Answer

A) rapid temperature change 
B) increasing salinity 
C) decreases in oxygen 
D) nutrient enrichment 
E) increases in carbon dioxide 
A) rapid temperature change 
B) increasing salinity 
C) decreases in oxygen 
D) nutrient enrichment 
E) increases in carbon dioxide

Question 6

The genus Pfiesteria in the Division Chlorophyta is capable of forming toxic metabolites.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is not a hydrocolloid?

Accepted Answer

A) agar 
B) alginic acid 
C) carrageenan 
D) cellulose 
E) more than one of these is not a hydrocolloid 
A) agar 
B) alginic acid 
C) carrageenan 
D) cellulose 
E) more than one of these is not a hydrocolloid

Question 8

Dinoflagellates cause ciguatera poisoning,a type of food poisoning with bizarre neurological symptoms.

Accepted Answer

A) True 
 B)False

Question 9

All of the following are genera being studied for the purpose of biofuel production except one.Choose the exception.

Accepted Answer

A) Ulva 
B) Chlamydomonas 
C) Chlorella 
D) Anabaena 
E) Dunaliella 
A) Ulva 
B) Chlamydomonas 
C) Chlorella 
D) Anabaena 
E) Dunaliella

Question 10

The dinoflagellates appeared on earth 3.5 billion years ago.

Accepted Answer

A) True 
 B)False

Question 11

Compounds isolated from Amphidinium have shown promise as

Accepted Answer

A) biolfuels. 
B) cancer fighting agents. 
C) a treatment for AIDS. 
D) a stabilizing agent in a variety of foods. 
E) being useful in all of these applications. 
A) biolfuels. 
B) cancer fighting agents. 
C) a treatment for AIDS. 
D) a stabilizing agent in a variety of foods. 
E) being useful in all of these applications.

Question 12

In the life cycle of a green alga,meiosis specifically occurs in the

Accepted Answer

A) gametophyte. 
B) sporangia. 
C) gametangia. 
D) sporophyte. 
E) zygotE. 
A) gametophyte. 
B) sporangia. 
C) gametangia. 
D) sporophyte. 
E) zygotE.

Question 13

The red color of red algae is due to the pigment

Accepted Answer

A) phycoerythrin. 
B) chlorophyll c. 
C) fucoxanthin. 
D) carotene. 
E) xanthophyll. 
A) phycoerythrin. 
B) chlorophyll c. 
C) fucoxanthin. 
D) carotene. 
E) xanthophyll.

Question 14

How do toxins produced by Microcystis aeruginosa cause damage?

Accepted Answer

A) by interfering with protein synthesis 
B) by breaking down the cytoskeleton 
C) by disrupting mitosis 
D) by poking holes in the nuclear membrane 
A) by interfering with protein synthesis 
B) by breaking down the cytoskeleton 
C) by disrupting mitosis 
D) by poking holes in the nuclear membrane

Question 15

Chlorophyll a and b occur in all divisions of algae but not the Cyanobacteria.

Accepted Answer

A) True 
 B)False

Question 16

What organ is affected by the toxins produced by Microcystis aeruginosa?

Accepted Answer

A) liver 
B) stomach 
C) pancreas 
D) heart 
E) small intestine 
A) liver 
B) stomach 
C) pancreas 
D) heart 
E) small intestine

Question 17

Which of the following is a common component of ice cream and toothpaste?

Accepted Answer

A) agar 
B) alginic acid 
C) carrageenan 
D) cellulose 
E) more than one of these is a common component of ice cream and toothpaste 
A) agar 
B) alginic acid 
C) carrageenan 
D) cellulose 
E) more than one of these is a common component of ice cream and toothpaste

Question 18

How is Caulerpa taxifolia and other siphonous algae different from typical green algae?

Accepted Answer

A) they do not use chlorophyll a and b as photosynthetic pigments 
B) they do not have a thallus 
C) they have both zoospores and gametes in its life cycle 
D) they are heteromorphic and heterotrophic 
E) they are coenocytic and have a stolon 
A) they do not use chlorophyll a and b as photosynthetic pigments 
B) they do not have a thallus 
C) they have both zoospores and gametes in its life cycle 
D) they are heteromorphic and heterotrophic 
E) they are coenocytic and have a stolon

Question 19

In which of the following way(s)does (do)algae differ from land plants?

Accepted Answer

A) Algae do not have cell walls. 
B) Some algae do not have chlorophyll a. 
C) Some algae are not photosynthetiC. 
D) Algae are not embryophytes. 
E) All of these are ways in which algae differ from land plants. 
A) Algae do not have cell walls. 
B) Some algae do not have chlorophyll a. 
C) Some algae are not photosynthetiC. 
D) Algae are not embryophytes. 
E) All of these are ways in which algae differ from land plants.

Question 20

When does sexual reproduction occur is diatoms?

Accepted Answer

A) when ocean temperatures fall below 4C 
B) after zoospores hibernate for several months 
C) after one of the frustule halves reaches a certain size 
D) after a diatom passes through the gut of an anemone 
E) trick question - all diatoms are a sex 
A) when ocean temperatures fall below 4C 
B) after zoospores hibernate for several months 
C) after one of the frustule halves reaches a certain size 
D) after a diatom passes through the gut of an anemone 
E) trick question - all diatoms are a sex

Exam 22: The Algae

A heterocyst is a cell specialized for

From which of the following did land plants evolve?

Ciguatera poisoning is due to activities of:

Which of the following is not a contributing factor to the success of Caulerpa taxifolia?

Algal blooms are triggered by:

The genus Pfiesteria in the Division Chlorophyta is capable of forming toxic metabolites.

Which of the following is not a hydrocolloid?

Dinoflagellates cause ciguatera poisoning,a type of food poisoning with bizarre neurological symptoms.

All of the following are genera being studied for the purpose of biofuel production except one.Choose the exception.

The dinoflagellates appeared on earth 3.5 billion years ago.

Compounds isolated from Amphidinium have shown promise as

In the life cycle of a green alga,meiosis specifically occurs in the

The red color of red algae is due to the pigment

How do toxins produced by Microcystis aeruginosa cause damage?

Chlorophyll a and b occur in all divisions of algae but not the Cyanobacteria.

What organ is affected by the toxins produced by Microcystis aeruginosa?

Which of the following is a common component of ice cream and toothpaste?

How is Caulerpa taxifolia and other siphonous algae different from typical green algae?

In which of the following way(s)does (do)algae differ from land plants?

When does sexual reproduction occur is diatoms?

Plants in Our Lives

The Plant Cell

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Plant Physiology

Plant Life Cycle: Flowers

Plant Life Cycle: Fruits and Seeds

Genetics

Plant Systematics and Evolution

Diversity of Plant Life

Human Nutrition

Origins of Agriculture

The Grasses

Legumes

Starchy Staples

Feeding a Hungry World

Stimulating Beverages

Herbs and Spices

Materials: Cloth, Wood, and Paper

Medicinal Plants

Psychoactive Plants

Poisonous and Allergy Plants

Fungi in the Natural Environment

Beverages and Foods From Fungi

Fungi That Affect Human Health

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